Electrical system design : RMUTL 1
2
Electrical system design : RMUTL 2
2.1 - 10-20 kV
-
-
-
-
-
Electrical system design : RMUTL 3
2.2 2.1
10-20 kV
230 kV
230 kV
230 kV 69 kV
69 kV
24 kV
24 kV 416/240 V
24 kV 416 / 240 kV
69 kV 24 kV
2.1 Electrical system design : RMUTL 4
1) ( Generating System )
2) ( Transmission System )
Electrical system design : RMUTL 5
3) ( Distribution System )
4) ( Utilization System )
Electrical system design : RMUTL 6
2.3
3
- ( . )
Electricity Generating Authority of Thailand ( EGAT. )
- ( . )
Metropolitan Electricity Authority ( MEA. )
- ( . )
Provincial Electricity Authority ( PEA. )
Electrical system design : RMUTL 7
2.4
2
1. ( Independent PowerProducer IPP )
2. ( Small Power Producer SPP ) Electrical system design : RMUTL 8
1) -
-
- 5
Electrical system design : RMUTL 9
2) -
- 6-8
- , ,
3) - 15
-
-
Electrical system design : RMUTL 10
4)
-
-
Electrical system design : RMUTL 11
-
-
- ( Overhead Aerial Line )
- 4 500 kV 3 3 50 Hz
230 kV 3 3 50 Hz
115 kV 3 3 50 Hz69 kV 3 3 50 Hz
Electrical system design : RMUTL 12
2.5 3
- - -
( Subtransmission System )- 230 kV- 115 kV- 69 kV
Electrical system design : RMUTL 13
( Distribution System )
- 69 kV 115 kV 24 kV
12 kV
- 69 kV 115 kV 2
- ( Power Transformer )
2-4
-
8 MVA 12 kV
15 MVA 24 kV
. 12 kV 24 kV
24 kV Electrical system design : RMUTL 14
24 kV
69 kV , 1 69 kV , 2
Station Service 24 kV
(ONAN/ONAF1/ONAF2)
HV CB
36/48/60 MVA
69 kV/24 kV
HV CBTie CB
69 kV/24 kV
36/48/60 MVA (ONAN/ONAF1/ONAF2)
HV CB HV CB
2.2 .
Electrical system design : RMUTL 15
( Utilization System )
- 24 kV 12 kV 416/240 V 3 4
12 kV 24 kV
416 V
240 V
416 V
N
C
B
416 V
A
240 V
240 V
2.3 .
Electrical system design : RMUTL 16
2.6
1)
-
-
-
Electrical system design : RMUTL 17
2)
- 230 kV, 115 kV 69 kV
-
3)
-
4)
- 100 kW
Electrical system design : RMUTL 18
1) 22 kV Conventional Solidly
Grounded System
- - 3 3 3 4
3 3
1 2
22 kV
22 kV 22 kV
22 kV
C
B
A
2.4 22 kV Conventional Solidly Grounded System
Electrical system design : RMUTL 19
2) 33 kV Multigrounded System WithOverhead Ground Wire
-
-
3 4
C19 kV
1 2
Overhead Ground Wire
33 kV
A
33 kV
33kV
B
N
2.5 33 kV Multigrounded System With Overhead Ground WireElectrical system design : RMUTL 20
( Overhead Aerial System )
2 - Radial Line
4
1
.
2
3
115 kV/22 kV
22 kV/400-230 V
2.6 Radial Line
Electrical system design : RMUTL 21
- Tie Line
.
.
B
.
.
A
2.7 Tie Line Electrical system design : RMUTL 22
1) 1
1 2 230 V
1 3 460/230 V
1
230 V
230 V
230 V
460 V
1 2
1 3
1
2.8 1
Electrical system design : RMUTL 23
2) 3 4
- 400/230 V
3
22 kV
33 kV
400 V
400 V
230 V
230 V
230 V400 V
N
B
C
A
3 4
2.9 3
Electrical system design : RMUTL 24
2.7
300 kVA (Low Voltage)
(Medium Voltage)
(High Voltage) (Substation)
Electrical system design : RMUTL 25
1) 220 V 1 2
- 5 ( 15A ) , 220 V
- 15 ( 45A ) , 220 V
- 30 ( 100A ), 220 V- 50 ( 150A ), 220 V
Electrical system design : RMUTL 26
()
2) 380/220 V 3 4
- 15 ( 45A ) , 380 V
- 30 ( 100A ) , 380 V
- 50 ( 150A ) , 380 V
- 200 A , 380 V- 400 A , 380 V
Electrical system design : RMUTL 27
()
3) 12 kV 3 3
15A ( 300 kVA )
750 A ( 15000 kVA )
4) 24 kV 3 3
10A ( 400 kVA )625 A ( 25000 kVA )
Electrical system design : RMUTL 28
1)
Wh
2.10
Electrical system design : RMUTL 29
2) -
-
-
Electrical system design : RMUTL 30
CT
VT
Wh
LA
LA
2.11
Electrical system design : RMUTL 31
CT
VT
Wh
LA
2.12 Electrical system design : RMUTL 32
CT
24 kV Gas-Insulated RMU
12/20 kV 240 mm
Wh
2
VT&
2.13
Electrical system design : RMUTL 33
CT
24 kV Gas-Insulated RMU
12/20 kV 240 mm
Wh
2
VT&
12/24 kV 24 kV
2.14
Electrical system design : RMUTL 34
CT
24 kV Gas-Insulated RMU
12/20 kV 240 mm
Wh
2
VT&
12/24 kV 24 kV
2.15
Electrical system design : RMUTL 35
2.8 ( Distribution Circuit Arrangements ) 5
1. Radial System
2. Primary-Selective System
3. Secondary-Selective System
4. Secondary Spot Network System
5. Looped Primary System
Electrical system design : RMUTL 36
Radial System
-
-
LVCB
LV MV
Fuse
TR
LVCB
LV = Low VoltageMV = Medium VoltageTR = TransformerMDB = Main Distribution Board
MDB MDB
2.16 Radial Circuit
Electrical system design : RMUTL 37
LVCB
TR1
Fuse
LVCB
TR2
Fuse
LVCB
TR3
Fuse
CB
MVMV
CB
LVCB
TR3
Fuse
LVCB
TR2
Fuse
LVCB
TR1
Fuse
CB
CB = Circuit Breaker ( )LVCB =
( ) ( )
2.17 Radial Circuit
Electrical system design : RMUTL 38
Primary-Selective System-
2.18 Primary Selective
LVCB
TR1
CB
MV
Fuse
TR2
LVCB
CB CB
FuseFuse Fuse
Electrical system design : RMUTL 39
Secondary Selective System-
-
2.19 Secondary Selective
Normally Open
Service Bus
TR1
Fuse
MV
CB
Fuse
LVCB
Primary
TR2
LVCB
Electrical system design : RMUTL 40
4
1.
2. AirForced Cooling 30-40 %
Electrical system design : RMUTL 41
3.
4. ( Overload )
Electrical system design : RMUTL 42
Normally
TR1Fuse
MV
CB
LVCB
CB
Open
TR2
LVCB
FuseCB
2.20 Secondary - Selective
Electrical system design : RMUTL 43
Secondary Spot Network System
-
-
- (Network Protection)
Circuit BreakerPrimary Switch or
Network Protector
CB
MV MV
Fuse
TR1
Fuse
TR2
CB
2.21 Secondary Spot Network
Electrical system design : RMUTL 44
Looped Primary System
- Close Loop- Open Loop
Isolating Switches
MV
CB
CB
2.22 Close Looped Primary
Electrical system design : RMUTL 45
RMU RMU RMU RMU
CB CB
CB
MV
TR 1 TR 2 TR 3 TR 4
2.23 Open Looped Primary
Electrical system design : RMUTL 46